Cutting mechanism for interfolding-machines.



L. A. STRAUBEL. CUTTING MECHANISM FOR INTERFOLDING MACHINES. APPLICATION FILED ran. 16. l9i7.

' Patented Dec. 11. 19W.

3 SHEETS-SHEET l.

W W l p WVQZW/ Q/MW L. A. STRAUBEL. CUTTING MECHANISM FOR INTERFOLDLNG MACHINES.

APPLICATION FILED FEB.16 1917- I 1 ,imkgfim Patented Dec. 11, 191?.

3 SHEIETS-SHEET a.

ll lll CUTTING MECHANISM FOR INTEBFOLDINGr-MACHHIES.

To all whom it may concern:

Be it known that I, Lours A. STRAUBEL, a citizen of the United States, and resident of Green Bay, in the county of Brown and State of Wisconsin, have invented certain new and useful Improvements in Cutting Mechanism for Tnterfolding-Machines; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to new and useful improvements in mechanisms for cutting a plurality of webs of paper longitudinally and transversely to form a continuous Web of overlapped sheets, and is adapted for use more particularly in connection with interfolding machines of the type set forth in my co-pending application for patent filed Aug. 19, 1916, Serial No. 11577 3.

It is primarily the object of my invention to provide an arrangement for automati cally threading or initially inserting the web of paper between the various knife members and guide rollers, and a further object which is partly encompassed in the automatic threading arrangement, resides in the provision of means for preventin the work material from turning up and f0 lowing thetransverse cutting means which extends-entirely across the slit webs.

With the above and other objects and ad vantages in view, the invention resides more particularly in the novel combination, formation and arrangement of parts hereinafter described and pointed out in the appended claims.

In the drawings:

Figure 1 is an elevational view of my 1mproved cutting mechanism embodied in an inter-folding machine.

Fig. 2 is a plan view of one side of the cutting mechanism.

Fig. 3 is a transverse sectional view through the entire cutting mechanism on the plane indicated by the line 3- 3 of Fig. 2.

Fig. 4 is a diagrammatic view taken on the transverse section through the cutting mechanism and showing the relation of the cut sheets.

Fig. 5 is a detail SBCtlOIltll new of the means for mounting the guide roller shaft.

Referring now more particularly to the accompanying drawings, 5 designates the body frame of an interfolding machine, and my improved cutting mechanism is dlsposed at the top thereof and comprlses a longitudlnally journaled pair of shafts 6 On which Specification of Letters Patent.

Patented Dec. ii. iai't.

Application filed February 16, 1917. I Serial No. M8962.

are mounted the body rolls 7 about which the various feeding and cutting rolls are grouped, and between which the mutually over-lapped sheets are frictionally engaged and pass downwardly to the folding mechanism.

Disposed at the sides of the shafts 6 are shafts 8 each carrying a pair of preferably rubber faced feed rolls 9 in frictional engagement with the corresponding body roll, the feed rolls of each shaft being spaced apart sufficiently to provide clearance for an annular blade 10 carried by a collar 11 mounted on a longitudinal shaft 12' which is journaled at its ends in bearing brackets 13- upstanding at the ends of the frame. These slitting blades engage in an annular groove 14 in the bed rolls, and thus the webs of paper are continuously longitudinally slit in moving therepast.

J ournaled also in the bearing brackets 13 and disposed above each feed roll is a air of cutting shafts 15 on alternate portions. of which are mounted a series of sleeves 16 having overlapping flanges at their ends and adapted to register with a longitudinal recess, 19 in the bed roll. The operation of these knives 18 is such that they act successively to produce a single transverse cut in the work material, and by so dividing the transverse cutting operation of the sheet,

other additional means for holding the,

sheets on the bed roll.

In common with the other machines of this nature the action of the transverse cutting means of each bed roll is so timed that the sheets pass between the bed rolls in mutually overlapped relation forming a continuous web of material to beacted on bv the following means. The knife carrying sleeves 16 are held against rotation on the shafts 15 by set screws 16 and thus the sleeves may be readily adjusted to individually adjust the position of the knives of each set. a

To guide the sheets after passing the transverse cutting blades, for proper move shaft inent between the bed rolls, a shaft 20 has its squared ends slidable in vertical slots 20 in pivotally suspended hanger arms 21 carried by the bearing brackets 13 the shaft being preferably urged toward the bed rollsby springs 20 although a spring means for urgin the shaft is not at all times essential.-v ounted-on each sideportion of the are a pair of cam" sleeves 22 on which are rotatably mounted suitable guide rolls 23-1 A single general support for guide rollers associated with both of the bed rolls, is thus providedand by the provision of the cam s'leeves'22, the rollers 23 may be readily cuttingllmives 18 whereby to prevent the discharging; into a,

possibility of paper turning up and followc e folding echanism embodied in the "resent machine comprises a pair, ofoscilatory folding memb'ers24 operated by latral cranks 25 connected with the crank arms of a. pair of shifts 26 disposed at the sides ofthe niachine, these foldlng members i I chute 2'5, thereunder which is curvilinearly extended to the side erthemachine farthest from thejbed rolls. Poweris initially imparted preferably to one oiwth fshaftsflfiof the machine and conventionally de gnatjd gar whee s 27 are mounted onthependsof the shafts 2'6 and mesh with idle gears 28meshing in turn with ears 29 of the bed roll Shafts 6; Thus a continuous drive is provided -,across the machine The gear wheel 29 of ach bed rell'shafiiis in Insh with gears 30 on the adjac nt ends of the corresponding pair of transversecutter shafts 15, these gears beinglat'erany spaced on the shafts by reason otheirprox1mity,and the gear .29 being consequently of double width. Each of the slittershafts 12 isdriven by a sprocket connection- 3 1,. withv the corresponding cutter shaft, and thefeed roll; shafts8 are driven by gears 32 thereon meshing'with the correspending bed roll gears.

The machine is supplied with work mate rialfrom apair of supply or parent? rolls (1111017 shown) at one side of the machine, and t e material from the lower roll pa$es directly between the adjacent bed roll 7 and feed roll sections 9 while the material from r the upper parent;

roll passes over a pair of guide rolls 33' a the upper corners of the [end directed laterally to discharge on to a suitable tableat said side of the machine. In machines wherein the material is slit into three or more portions, access to the top of the machine cannot be had by reason of the web of work material thereover and the webs of material are threaded through the machine automatically by reason of the overlapping relation of the various feeding, slitting and transverse cutting means on the body rolls.

While my improved mechanism has been described'as particularly adapted for use in forming a continuous web of over-lapped sheets, it is obvious that one side of the mechanism forms a complete unit for slitting, transversely cutting and delivering single sheets of material.

What is claimed:

1. In a machine of'the class descrioed, the combination of a bed roll, a driven feed roll in engagement therewith, a rotatable slitting knife engageable with material on the bed roll, a rotatable transverse cutting means engaging with material on the bed roll, and said feed roll and transverse cutting means having peripheral portions overlapped-whereby to guide work material between them and the bed roll.

, 2, Ina machine of the class described the combination of a bed roll, a-feed rollin engagement with one side of the bed roll, and

including spaced sections, a rotary slittin knife engageable with material on the be roll and extending between the sections of the feed rolls, a transverse cuttlng means engageable with material on the bed roll and a guide roll adjacent the side of the bed roll, opposite that side in engagement with the feed roll 3, In a machine of the class described, the

combination with a pair of bed rolls, of transrerse cutting meansassociated with said rolls, a shaft disposed centrally between and above the rolls, a pair of weed tric sleeveson the shaft and guide rolls rotatably mounted on the eccentric sleeves for coiiperation with corresponding bed rolls.

4. In a machine of the class described, the combination with a pair of bed rolls of transverse cutting means associated with said rolls, a shaft disposed centrally between and above the rolls, eccentric 'ortions on the shaft and guide rolls rotatab y mounted on said eccentric portions for coa'ction each with a corres onding bed roll.

5a In a mac ine of the class described, the combination with a pair of bed rolls, of transverse cutting means associated with said rolls,a shaft disposed centrally between and above the rolls, eccentric portions on the shaft and guide rolls rotatshly monnted on have hereunto set my hand at Green Bay, said eccentric portions. for coactlon each In the county of Brown and State of Wiswith a corresponding bed roll and said shaft consin, in the presence of two witnesses.

heing pivotally suspended to permit move- LOUIS A. STRAUBEL. 5 ment in a direction transversely of the bed Witnesses:

rolls. 0 H. Fmmm, In testimony that I claim the foregoing WM. Bownmo.

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